According to Colin Lucas a revolution is caused when "long term political causes combine with short term economic causes". In the context of the July Revolution, there had been both political dejection since 1820 and an economic recession that lasted from 1826-32, these "causes" meant that France was ripe for another revolution, and in fact it was almost inevitable.
To prove that this revolution was actually inevitable, one has to look at the political unrest as far back as the reign of Louis XVIII (1814-24). Louis XVIII was the younger brother of Louis XVI and assumed the title of King in 1795, having fled into exile in 1791 during the revolution but became King only on the fall of Napoleon I in 1814. Louis XVIII was expelled from his role as sovereign briefly during the Hundred Days in 1815 but quickly resumed power after his defeat at Waterloo.
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